EP1888976A1 - Heat pump system and method for heating a fluid - Google Patents
Heat pump system and method for heating a fluidInfo
- Publication number
- EP1888976A1 EP1888976A1 EP06741091A EP06741091A EP1888976A1 EP 1888976 A1 EP1888976 A1 EP 1888976A1 EP 06741091 A EP06741091 A EP 06741091A EP 06741091 A EP06741091 A EP 06741091A EP 1888976 A1 EP1888976 A1 EP 1888976A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- refrigerant
- fluid
- heating
- temperature
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D15/00—Other domestic- or space-heating systems
- F24D15/04—Other domestic- or space-heating systems using heat pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/02—Domestic hot-water supply systems using heat pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
- F24H9/2028—Continuous-flow heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
- F25B2339/047—Water-cooled condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0403—Refrigeration circuit bypassing means for the condenser
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/05—Compression system with heat exchange between particular parts of the system
- F25B2400/052—Compression system with heat exchange between particular parts of the system between the capillary tube and another part of the refrigeration cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/13—Economisers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2509—Economiser valves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/12—Hot water central heating systems using heat pumps
Definitions
- This present invention relates to a heat pump system and in particular to a heat pump system and method for heating a fluid.
- the invention has been developed primarily for use as a heat pump system and a method for water heating in a cold environment or an environment with large variations in ambient temperature and will be described hereinafter with reference to this application. However, it will be appreciated that the invention is not limited to this particular field of use.
- Sanitary water needs to be heated to a temperature at or above 6O 0 C. Quite often the water for building heating also needs to be heated to this temperature.
- An air sourced heat pump system has been used for this type of water heating and conventionally uses an air conditioning compressor.
- the conventional heat pump system cannot work in environments with a wide ambient temperature range, such as an environment where it is very hot in summer but very cold in winter.
- the conventional system cannot work where there is a relatively large temperature difference between the water and the heat source. For example, where the ambient temperature is constantly low, such as a cold environment.
- the capillary tube is preferably in close proximity with the first pipe to cool the refrigerant passing through the first pipe to the main expansion device.
- the capillary tube is helically wound around the first pipe.
- a downstream end of the capillary tube may be connected to a section of pipe.
- the pipe section is preferably in contact with the first pipe to transfer heat between the first pipe and the pipe section.
- the pipe section may lie substantially parallel to the first pipe and may be fixed to the first pipe by metal clamps or other suitable fastening means.
- Heat transfer paste is preferably interposed between the pipe section and the first pipe to facilitate heat transfer.
- the pipe section is also preferably deformed to conform to the first pipe.
- the fluid that is to be heated is preferably water.
- the heat source may be ambient air.
- the heat pump system for heating water includes an evaporator 1 for vaporising a refrigerant by transferring heat from an ambient heat source 3, a compressor 4 fluidly connected to the evaporator 1 for compressing the refrigerant vapour and a condenser 5 fluidly connected to the compressor 4 for transferring heat from the compressed refrigerant to the water 6.
- the heat source 3 is the ambient air of a cold environment and the compressor 4 is a conventional compressor for low temperature refrigeration with a liquid injection port 7.
- the fluid injection means 9 includes a fluid injection solenoid valve 13 for turning liquid injection of the refrigerant portion on and off, and a pipe section 15 for delivering the temperature reduced refrigerant portion through a check valve 17 to the injection port 7 at the compressor 4.
- the check valve 17 ensures that only the temperature reduced refrigerant portion enters the compressor 4 and prevents any backflow of refrigerant from the compressor 4 through pipe section 15 to the capillary tube 8 and the fluid injection solenoid valve 13.
- Refrigerant in the evaporator 1 is vaporised using heat extracted from the ambient air 3.
- the compressor 4 draws the refrigerant vapour from the evaporator 1 and compresses it from a low pressure, low temperature vapour state to a high pressure, high temperature vapour state.
- the high pressure, high temperature refrigerant vapour is then exhausted to the condenser 5, which acts as a heat exchanger to pass heat from the refrigerant vapour to the water 6.
- the condenser 5 acts as a heat exchanger to pass heat from the refrigerant vapour to the water 6.
- the refrigerant portion in liquid/vapour form is then injected to the compressor 4 to mix with, and cool down, the superheated refrigerant vapour in the compressor 4 after quasi-first-stage compression (that is, the refrigerant portion is injected into the compressor after the refrigerant vapour has been compressed to an intermediate pressure).
- quasi-first-stage compression that is, the refrigerant portion is injected into the compressor after the refrigerant vapour has been compressed to an intermediate pressure.
- quasi-second stage compression takes place and the combined refrigerant vapour and refrigerant portion is compressed to a final pressure.
- the compressed refrigerant is then discharged into condenser 5.
- the amount of the refrigerant portion that is diverted depends on the temperature of the ambient heat source and the water temperature that is required.
- the expansion device 8 is an expansion valve 33 with an intercooler 35.
- the intercooler 35 is fluidly connected to the condenser 5 and the main expansion valve 10.
- the bypass passage 12 is located downstream of the intercooler 35. Liquid refrigerant from the condenser 5 enters the intercooler 35.
- the intercooler 35 initially cools down the liquid refrigerant before the refrigerant portion is extracted via the bypass passage 12 to the liquid injection valve 13.
- the refrigerant portion passes through expansion valve 33 to further reduce its temperature and pressure.
- the temperature reduced refrigerant portion is then returned to the intercooler 35 to exchange heat with the liquid refrigerant from the condenser 5 passing through the intercooler 35 before being delivered to the compressor 4.
- the refrigerant portion mixes with the refrigerant vapour in the compressor to induce at least quasi- two-stage compression.
- the liquid refrigerant portion is extracted after the intercooler
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Compressor (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2005902571A AU2005902571A0 (en) | 2005-05-19 | Heat pump system and method for heating a fluid | |
PCT/AU2006/000663 WO2006122367A1 (en) | 2005-05-19 | 2006-05-18 | Heat pump system and method for heating a fluid |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1888976A1 true EP1888976A1 (en) | 2008-02-20 |
EP1888976A4 EP1888976A4 (en) | 2011-02-23 |
Family
ID=37424908
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06741091A Withdrawn EP1888976A4 (en) | 2005-05-19 | 2006-05-18 | Heat pump system and method for heating a fluid |
Country Status (8)
Country | Link |
---|---|
US (1) | US20080210768A1 (en) |
EP (1) | EP1888976A4 (en) |
JP (1) | JP2008541000A (en) |
KR (1) | KR20080028371A (en) |
CN (1) | CN1865812A (en) |
CA (1) | CA2608688A1 (en) |
NZ (1) | NZ563726A (en) |
WO (1) | WO2006122367A1 (en) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5181813B2 (en) * | 2008-05-02 | 2013-04-10 | ダイキン工業株式会社 | Refrigeration equipment |
JP2011094810A (en) * | 2009-09-30 | 2011-05-12 | Fujitsu General Ltd | Heat pump cycle apparatus |
US8157892B2 (en) | 2010-05-17 | 2012-04-17 | Enverid Systems, Inc. | Method and system for improved-efficiency air-conditioning |
ES2665566T3 (en) * | 2010-12-08 | 2018-04-26 | Daikin Europe N.V. | Heating |
US8690999B2 (en) | 2011-02-09 | 2014-04-08 | Enverid Systems, Inc. | Modular, high-throughput air treatment system |
CN108579706A (en) | 2011-05-17 | 2018-09-28 | 恩弗里德系统公司 | Sorbent for reducing carbon dioxide from room air |
CN104254741B (en) | 2012-01-10 | 2017-07-07 | 恩弗里德系统公司 | For the method and system that the air quality and energy that manage in air-conditioning system are used |
CN108096991A (en) | 2012-05-22 | 2018-06-01 | 恩沃德系统公司 | Efficient utilization to the adsorbent of the washing of room air |
US9950290B2 (en) | 2012-07-18 | 2018-04-24 | Enverid Systems, Inc. | Systems and methods for regenerating adsorbents for indoor air scrubbing |
US9399187B2 (en) | 2012-09-24 | 2016-07-26 | Enverid Systems, Inc. | Air handling system with integrated air treatment |
WO2014078708A1 (en) | 2012-11-15 | 2014-05-22 | Enverid Systems, Inc. | Method and system for reduction of unwanted gases in indoor air |
US9919257B2 (en) | 2013-09-17 | 2018-03-20 | Enverid Systems, Inc. | Systems and methods for efficient heating of sorbents in an indoor air scrubber |
US9696074B2 (en) * | 2014-01-03 | 2017-07-04 | Woodward, Inc. | Controlling refrigeration compression systems |
US20180147526A1 (en) | 2015-05-11 | 2018-05-31 | Enverid Systems, Inc. | Method and system for reduction of unwanted gases in indoor air |
US10792608B2 (en) | 2015-08-24 | 2020-10-06 | Enverid Systems, Inc. | Scrubber for HVAC system |
US11207633B2 (en) | 2016-04-19 | 2021-12-28 | Enverid Systems, Inc. | Systems and methods for closed-loop heating and regeneration of sorbents |
KR101950378B1 (en) | 2016-07-28 | 2019-02-20 | 오영한 | Fluid heating pump using frictional heat |
CN106091455B (en) * | 2016-08-04 | 2018-07-10 | 青岛大学 | A kind of quasi- two stage compression refrigeration system of piston compressor intermediate injection |
WO2018089856A1 (en) | 2016-11-10 | 2018-05-17 | Enverid Systems, Inc. | Low noise, ceiling mounted indoor air scrubber |
CN106403282A (en) * | 2016-11-17 | 2017-02-15 | 珠海格力电器股份有限公司 | Heat pump hot water system and heat pump water heater with heat pump hot water system |
KR101878234B1 (en) | 2016-12-05 | 2018-07-16 | 한국에너지기술연구원 | Vapor injection applied heat pump system for making highly dried hot steam |
JPWO2021166126A1 (en) * | 2020-02-19 | 2021-08-26 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
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CH234315A (en) * | 1943-07-13 | 1944-09-30 | Escher Wyss Maschf Ag | Heat pump. |
US2518587A (en) * | 1947-04-11 | 1950-08-15 | Philco Corp | Refrigerant flow control |
US2714806A (en) * | 1951-12-12 | 1955-08-09 | Hugh J Scullen | Refrigerating system |
US4019337A (en) * | 1974-10-23 | 1977-04-26 | Zearfoss Jr Elmer W | Refrigeration apparatus and method |
US5056329A (en) * | 1990-06-25 | 1991-10-15 | Battelle Memorial Institute | Heat pump systems |
US6571576B1 (en) * | 2002-04-04 | 2003-06-03 | Carrier Corporation | Injection of liquid and vapor refrigerant through economizer ports |
JP2004183913A (en) * | 2002-11-29 | 2004-07-02 | Mitsubishi Electric Corp | Air conditioner |
JP2005121246A (en) * | 2003-10-14 | 2005-05-12 | Kobe Steel Ltd | Freezer |
Family Cites Families (32)
Publication number | Priority date | Publication date | Assignee | Title |
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US2463881A (en) * | 1946-07-06 | 1949-03-08 | Muncie Gear Works Inc | Heat pump |
US2619326A (en) * | 1949-11-29 | 1952-11-25 | Gen Electric | Fluid heating system, including a heat pump |
US3301002A (en) * | 1965-04-26 | 1967-01-31 | Carrier Corp | Conditioning apparatus |
US4055963A (en) * | 1975-06-25 | 1977-11-01 | Daikin Kogyo Co., Ltd. | Heating system |
US4058988A (en) * | 1976-01-29 | 1977-11-22 | Dunham-Bush, Inc. | Heat pump system with high efficiency reversible helical screw rotary compressor |
US4474018A (en) * | 1982-05-06 | 1984-10-02 | Arthur D. Little, Inc. | Heat pump system for production of domestic hot water |
US4454725A (en) * | 1982-09-29 | 1984-06-19 | Carrier Corporation | Method and apparatus for integrating a supplemental heat source with staged compressors in a heat pump |
DE3329661A1 (en) * | 1982-12-14 | 1984-06-14 | VEB Kombinat Luft- und Kältetechnik, DDR 8080 Dresden | Regulation of temperatures, temperature differences or levels in refrigerant circuits |
JPS61285352A (en) * | 1985-06-11 | 1986-12-16 | 株式会社神戸製鋼所 | Screw type heat pump |
US4696168A (en) * | 1986-10-01 | 1987-09-29 | Roger Rasbach | Refrigerant subcooler for air conditioning systems |
JPH01256761A (en) * | 1988-04-05 | 1989-10-13 | Mitsubishi Electric Corp | Heat pump device |
JP2624767B2 (en) * | 1988-04-20 | 1997-06-25 | 株式会社日立製作所 | Refrigeration equipment |
US4918942A (en) * | 1989-10-11 | 1990-04-24 | General Electric Company | Refrigeration system with dual evaporators and suction line heating |
JPH05164412A (en) * | 1991-12-17 | 1993-06-29 | Hitachi Ltd | Air conditioner |
JPH05187723A (en) * | 1992-01-07 | 1993-07-27 | Mitsubishi Electric Corp | Refrigerating plant |
JPH0772656B2 (en) * | 1992-05-01 | 1995-08-02 | 有限会社岡野冷機サービス | Supercooling and refrigerant cooling device for compression refrigerator |
DE69414077T2 (en) * | 1993-12-14 | 1999-06-10 | Carrier Corp | Operation of an economizer for systems with a two-stage compressor |
DE69414415T2 (en) * | 1994-02-03 | 1999-06-10 | Svenska Rotor Maskiner Ab | REFRIGERATION SYSTEM AND METHOD FOR CONTROLLING THE REFRIGERATION PERFORMANCE OF SUCH A SYSTEM |
JP3365387B2 (en) * | 1994-11-09 | 2003-01-08 | 松下電器産業株式会社 | Heat pump water heater |
JPH10253171A (en) * | 1997-03-11 | 1998-09-25 | Matsushita Electric Ind Co Ltd | Air conditioner |
US5848537A (en) * | 1997-08-22 | 1998-12-15 | Carrier Corporation | Variable refrigerant, intrastage compression heat pump |
JPH11248264A (en) * | 1998-03-04 | 1999-09-14 | Hitachi Ltd | Refrigerating machine |
EP1203916A1 (en) * | 2000-11-02 | 2002-05-08 | Kwt Kälte-Wärmetechnik Ag | Heating appliance comprising a heat pump |
CN1133047C (en) * | 2001-03-14 | 2003-12-31 | 清华同方股份有限公司 | Heat pump air conditioners suitable for cold area |
US6817206B2 (en) * | 2001-07-02 | 2004-11-16 | Jamshid Jim Shahbaz | Air conditioning apparatus for isolated spaces |
DE10220870A1 (en) * | 2002-05-11 | 2003-11-20 | Juergen Uehlin | Operating autonomous heat pump, e.g. for power stations, involves deriving drive energy for compressor at least partly from supplied thermal energy using at least one expansion machine |
JP4313083B2 (en) * | 2003-05-13 | 2009-08-12 | 株式会社神戸製鋼所 | Screw refrigeration equipment |
US6820434B1 (en) * | 2003-07-14 | 2004-11-23 | Carrier Corporation | Refrigerant compression system with selective subcooling |
US7024877B2 (en) * | 2003-12-01 | 2006-04-11 | Tecumseh Products Company | Water heating system |
US7716943B2 (en) * | 2004-05-12 | 2010-05-18 | Electro Industries, Inc. | Heating/cooling system |
US7204099B2 (en) * | 2005-06-13 | 2007-04-17 | Carrier Corporation | Refrigerant system with vapor injection and liquid injection through separate passages |
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-
2005
- 2005-11-15 CN CNA200510125308XA patent/CN1865812A/en active Pending
-
2006
- 2006-05-18 US US11/914,695 patent/US20080210768A1/en not_active Abandoned
- 2006-05-18 WO PCT/AU2006/000663 patent/WO2006122367A1/en not_active Application Discontinuation
- 2006-05-18 KR KR1020077029326A patent/KR20080028371A/en not_active Application Discontinuation
- 2006-05-18 JP JP2008511505A patent/JP2008541000A/en active Pending
- 2006-05-18 EP EP06741091A patent/EP1888976A4/en not_active Withdrawn
- 2006-05-18 NZ NZ563726A patent/NZ563726A/en not_active IP Right Cessation
- 2006-05-18 CA CA002608688A patent/CA2608688A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH234315A (en) * | 1943-07-13 | 1944-09-30 | Escher Wyss Maschf Ag | Heat pump. |
US2518587A (en) * | 1947-04-11 | 1950-08-15 | Philco Corp | Refrigerant flow control |
US2714806A (en) * | 1951-12-12 | 1955-08-09 | Hugh J Scullen | Refrigerating system |
US4019337A (en) * | 1974-10-23 | 1977-04-26 | Zearfoss Jr Elmer W | Refrigeration apparatus and method |
US5056329A (en) * | 1990-06-25 | 1991-10-15 | Battelle Memorial Institute | Heat pump systems |
US6571576B1 (en) * | 2002-04-04 | 2003-06-03 | Carrier Corporation | Injection of liquid and vapor refrigerant through economizer ports |
JP2004183913A (en) * | 2002-11-29 | 2004-07-02 | Mitsubishi Electric Corp | Air conditioner |
JP2005121246A (en) * | 2003-10-14 | 2005-05-12 | Kobe Steel Ltd | Freezer |
Non-Patent Citations (1)
Title |
---|
See also references of WO2006122367A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA2608688A1 (en) | 2006-11-23 |
NZ563726A (en) | 2009-09-25 |
CN1865812A (en) | 2006-11-22 |
EP1888976A4 (en) | 2011-02-23 |
JP2008541000A (en) | 2008-11-20 |
WO2006122367A1 (en) | 2006-11-23 |
KR20080028371A (en) | 2008-03-31 |
US20080210768A1 (en) | 2008-09-04 |
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